Learn Science

公开|
7
8
1
2
4
5
3
9
6

横向

1

Precious yellow metallic element

3

Path of a planet around the sun

4

Fourth state of matter

5

Measure of matter in an object

6

Center of an atom or cell

9

Preserved remains of ancient life

纵向

2

Amplified beam of light

3

Compound containing oxygen

4

Tectonic landmass section

7

Form of thermal energy

8

Ball of burning gas in space